(1) Malaise, fatigability, low-grade fever, aching chest pain and mild cough lasting a few days to a few weeks are usual.
(2) Tension responses produced by stimulating each isolated motor axon were used to find the tetanic tension of the muscle unit and to classify the unit (12) as either type S (slow twitch, fatigue resistant), type FR (fast twitch, fatigue resistant), type FI (fast twitch, intermediate fatigability), or type FF (fast twitch, highly fatigable).
(3) Myosin ATPase staining showed that about 80% of the LGM consists of type II A fibres, whilst the remainder are type II B. Physiological determination of the contractile properties of motor units indicated two classes of units: those that were relatively fatigue resistant and did not show a sag property (like fast-twitch, fatigue-resistant fibres or FR) and those that were relatively fatigable and did show a sag property (like fast-twitch, fatigable fibres or FF).
(4) The reduction in inspiratory muscle performance in the whole population could be accounted for almost entirely by four subjects who developed symptoms of "tiredness" and easy fatigability while receiving propranolol.
(5) There were some hormonal patterns characteristic of individual complaints; hot flush was associated with increased FSH and LH, and decreased E1 and E2; difficulty in falling asleep, excitability, and fatigability, with increased FSH and LH, and decreased E2; nervousness, with increased LH and decreased E2; headache, with increased LH and PRL, and decreased E2; feeling of cold, with decreased E2 and PRL; and numbness and shoulder stiffness, with decreased E2.
(6) The use of quasitrapezoidal-shaped pulses and a tripolar cuff electrode made selective activation of small motor axons possible, thus recruiting slow-twitch, fatigue-resistant muscle units before fast-twitch, fatigable units in a heterogeneous muscle.
(7) Secondary effects are fairly frequent (60%), characterized in most cases by diminished muscular strength and greater fatigability.
(8) Both soleus and extensor digitorum longus exhibited a linear relationship between fatigability (i.e., force decline after a 360-s fatigue test) and the magnitude of the twitch force following the fatigue test.
(9) We studied 4 siblings (3 men and 1 woman), ages 22 to 43 years, with congenital ptosis, external ophthalmoplegia, proximal muscle weakness and fatigability unresponsive to acetylcholinesterase (AChE) inhibitors.
(10) The other three were members of a family with the restless legs syndrome, fatigability and diffuse muscular pain.
(11) Other common features were muscle weakness restricted predominantly to ptosis, weakness of facial and masticatory muscles, and fatigable speech; mild and nonprogressive course; response to cholinesterase inhibitors; absence of antibodies to acetylcholine receptor; decremental response on repetitive stimulation at 3 Hz but no repetitive compound muscle action potential in response to a single nerve stimulus.
(12) Fast fatigable units were composed of type IIB fibers and fast fatigue resistant units were composed of type IIA fibers.
(13) They provide statistical evidence of an increase in concentration power and a decrease in both fatigability and motor unrest.
(14) The symptoms included allergic reaction in 1 patient, gastrointestinal system disorders in 7 patients and general fatigability in 1 patient.
(15) The stiffness during the initial portion of a ramp stretch was measured in cat peroneus longus muscle at rest and during maximal tetanic contractions produced by increasing numbers of motor units of the same type [slow (S), fast fatigue resistant (FR), or fast fatigable (FF)].
(16) General feeling during the past month and fatigability were related to the first and second principal component scores, respectively.
(17) Hypopolarization of the membrane potential is the likely cause for the increased fatigability.
(18) The activities of malate dehydrogenase and beta-hydroxyacyl-CoA dehydrogenase distinguished between fatigable (type FF) and fatigue-resistant (types FR and S) units.
(19) Major problems were respiratory deficit, easy fatigability, and the possibility of relapse.
(20) She had Raynaud's symptom for 6 months, and recently developed cough and easy fatigability.